import { mapGetters } from 'vuex'
export default {
	computed:{
		...mapGetters('m_cart',['total'])
	},
	watch:{
		total(newValue){
			this.setBadge()
		}
	},
	onShow(){
		this.setBadge()
	},
	methods:{
		setBadge(){
			if(this.total==0)
				uni.removeTabBarBadge({index:2})
			else
				uni.setTabBarBadge({
					index:2,//索引
					text:this.total+''
				})
		}
	}
}